<template>
  <view class="my-settle-container" >
    <!-- 全选区域 -->
    <label class="radio" @click="changeAddState">
      <radio color="#c00000" :checked="isFullCheck" /><text>全选</text>
    </label>
    
    <!-- 合计区域 -->
    <view class="amount-box">
      合计：<text class="amount">${{checkedGoodsAmount}}</text>
    </view>
    
    <!-- 结算区域 -->
    <view class="btn-settle" @click="settlement" >
      结算({{checkedCount}})
    </view>
  </view>
</template>

<script>
  import { mapGetters,mapMutations,mapState } from 'vuex'
  export default {
    name:"my-settle",
    computed: {
      ...mapGetters('m_cart', ['checkedCount', 'total', 'checkedGoodsAmount']),
      ...mapGetters('m_user', ['addstr']),
      ...mapState('m_user', ['token']),
      // 判断是否全选
      isFullCheck() {
        return this.total === this.checkedCount
      }
    },
    data() {
      return {
        
      };
    },
    methods: {
      // 使用mutations 辅助函数  把m_cart 模块提供的 updataAddGoodsStore 方法映射到当前组件中
      ...mapMutations('m_cart', ['updateAddGoodsStore']),
      
      changeAddState() {
        // 修改购物车中所有商品的勾选状态
        // this.isFullCheck 表示，当前全选按钮的状态取反之后，就是最新的勾选状态了
        this.updateAddGoodsStore(!this.isFullCheck)
      },
      settlement() {
        // 判断用户是否勾选了需要购买的商品
        if(!this.checkedCount) return uni.$showMsg('请选择你要结算的商品！')
      
        // 判断用户是否选择了收获地址
        if(!this.addstr) return uni.$showMsg('请选择你的收货地址！')
        
        // 判断用户是否登录
        if(!this.token) return uni.$showMsg('请先登录您的账号！')
      }
    }
  }
</script>

<style lang="scss">
.my-settle-container {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 50px;
  background-color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-left: 5px;
  font-size: 14px;
  
  .radio {
    display: flex;
    align-items: center;
  }
  .amount-box {
    .amount {
      color: #c00000;
    }
  }
  .btn-settle {
    height: 50px;
    min-width: 100px;
    background-color: #c00000;
    color: white;
    line-height: 50px;
    text-align: center;
    padding: 0 15px;
  }
}
</style>